Display screen with a graphical user interface



FIG. 1 is a front view of a first image in a sequence for a display screen with a transitional graphical user interface showing the new design according to an embodiment;

FIG. 2 is a front view of a second image of the sequence;

FIG. 3 is a front view of a third image of the sequence;

FIG. 4 is a front view of a fourth image of the sequence;

FIG. 5 is a front view of a fifth image of the sequence; and,

FIG. 6 is a front view of a sixth image of the sequence.

The broken-line square illustrates the perimeter of a display screen. The broken lines form no part of the claimed design. 

CLAIM We claim the ornamental design for a display screen with a graphical user interface, as shown and described. 